syzbot

INFO: task syz-executor423:5090 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor423 state:D stack:27168 pid:5090  tgid:5090  ppid:5088   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
 exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
 synchronize_rcu_expedited+0x3ff/0x800 kernel/rcu/tree_exp.h:996
 synchronize_rcu+0x2f5/0x3b0 kernel/rcu/tree.c:3568
 vhost_vsock_dev_release+0x179/0x3f0 drivers/vhost/vsock.c:732
 __fput+0x270/0xb70 fs/file_table.c:394
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa8a/0x2ad0 kernel/exit.c:869
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1018
 __do_sys_exit_group kernel/exit.c:1029 [inline]
 __se_sys_exit_group kernel/exit.c:1027 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1027
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fcb21f40e39
RSP: 002b:00007fffe21659f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcb21f40e39
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fcb21fbc2b0 R08: ffffffffffffffb8 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcb21fbc2b0
R13: 0000000000000000 R14: 00007fcb21fbcd20 R15: 00007fcb21f11fc0
 </TASK>
INFO: task syz-executor423:5096 blocked for more than 150 seconds.
      Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor423 state:D stack:27392 pid:5096  tgid:5096  ppid:5091   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x257/0x290 kernel/time/timer.c:2143
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e0/0x5f0 kernel/sched/completion.c:116
 vhost_worker_flush+0xc5/0x100 drivers/vhost/vhost.c:293
 vhost_dev_flush+0xaa/0x180 drivers/vhost/vhost.c:307
 vhost_vsock_flush drivers/vhost/vsock.c:693 [inline]
 vhost_vsock_dev_ioctl+0x3db/0xb50 drivers/vhost/vsock.c:878
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b